Zohar, Toledot

“Come and see: Whoever engages in Torah, maintaining every work of creation perfectly, fittingly. Every single smooth member in the human body corresponds to a creature in the world. For just as a human being is composed of members upon members, all standing rung upon rung; arrayed one upon another, yet all one body, so too the world: all those creatures are members upon members, standing one upon another, which when all arrayed actually form one body.

“All these resemble Torah, for Torah is entirely members, joints, sections – standing one upon another, all arrayed, becoming one body. When David saw this handiwork, he opened and said, O YHWH, how manifold are Your works! In wisdom You have made them all; the earth is full of Your creatures (Psalms: 104:24)